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MXPA06001474A - Personal care compositions. - Google Patents

Personal care compositions.

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Publication number
MXPA06001474A
MXPA06001474A MXPA06001474A MXPA06001474A MXPA06001474A MX PA06001474 A MXPA06001474 A MX PA06001474A MX PA06001474 A MXPA06001474 A MX PA06001474A MX PA06001474 A MXPA06001474 A MX PA06001474A MX PA06001474 A MXPA06001474 A MX PA06001474A
Authority
MX
Mexico
Prior art keywords
water
personal care
soluble
care composition
further characterized
Prior art date
Application number
MXPA06001474A
Other languages
Spanish (es)
Inventor
George Endel Deckner
Original Assignee
Procter & Gamble
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Procter & Gamble filed Critical Procter & Gamble
Publication of MXPA06001474A publication Critical patent/MXPA06001474A/en

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Classifications

    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q19/00Preparations for care of the skin
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04Dispersions; Emulsions
    • A61K8/06Emulsions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K8/00Cosmetics or similar toiletry preparations
    • A61K8/02Cosmetics or similar toiletry preparations characterised by special physical form
    • A61K8/04Dispersions; Emulsions
    • A61K8/06Emulsions
    • A61K8/062Oil-in-water emulsions
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61KPREPARATIONS FOR MEDICAL, DENTAL OR TOILETRY PURPOSES
    • A61K2800/00Properties of cosmetic compositions or active ingredients thereof or formulation aids used therein and process related aspects
    • A61K2800/40Chemical, physico-chemical or functional or structural properties of particular ingredients
    • A61K2800/54Polymers characterized by specific structures/properties
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q1/00Make-up preparations; Body powders; Preparations for removing make-up
    • A61Q1/02Preparations containing skin colorants, e.g. pigments
    • AHUMAN NECESSITIES
    • A61MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61QSPECIFIC USE OF COSMETICS OR SIMILAR TOILETRY PREPARATIONS
    • A61Q13/00Formulations or additives for perfume preparations

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  • Health & Medical Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Veterinary Medicine (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Chemical & Material Sciences (AREA)
  • Dispersion Chemistry (AREA)
  • Birds (AREA)
  • Epidemiology (AREA)
  • Dermatology (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Cosmetics (AREA)

Abstract

In a first aspect, personal care compositions are provided comprising oil-in-water emulsions, the emulsions comprising defined water-soluble emulsification polymers. In a second aspect, a method of manufacture of the personal care compositions according to the first aspect is provided.

Description

COMPOSITIONS FOR PERSONAL CARE FIELD OF THE INVENTION The present application relates to personal care applications comprising defined water-in-oil emulsions, and methods for making such personal care compositions.
BACKGROUND OF THE INVENTION The emulsions are generally stabilized with suitable emulsifying surfactants which, due to their amphiphilic structure, reside at the oil / water interface and therefore stabilize the dispersed droplets. However, the typical disadvantage of these surfactants is that they can penetrate and irritate the skin, the eyes, the scalp and usually impart an inadequate feeling on the skin. In addition, when conventional surfactants are used to make emulsions, it is typically necessary to apply heat during processing, which may also be inconvenient because that heat limits the possibility of including heat sensitive ingredients and may also limit the types of locations where the emulsions can be developed, for security reasons and others may, for example, prohibit the production of emulsions in some specific places.
Another disadvantage of using traditional surfactants, including alkoxylated surfactants, is that they can cause the materials to emulsify again after the decomposition of the emulsion; the decomposition of the emulsion makes it possible to supply emulsified materials, but when the composition is re-emulsified, for example, after applying a composition for personal cleansing on the skin during showering or washing, the desired benefit can be reduced (because in this example the emollients and emulsified assets are removed from the skin with water). Another disadvantage of conventional surfactants is that they can not adequately emulsify polar oils, such as oils having a high solubility parameter. U.S. Pat. no. 4,640,709 teaches how to make oil-in-water emulsions using water-soluble alkylated polyvinylpyrrolidone emulsifiers. These water-in-oil emulsions represent an intermediate in the way of the encapsulation of immiscible materials in water; the encapsulation is achieved by the reaction of the alkylated polyvinyl pyrrolidone with an additional component to create a polycondensed "protective wall" around the water immiscible material. U.S. Pat. no. 4,640,709 refers to the encapsulation of herbicides, insecticides, and other agricultural chemicals. Concentrated emulsions having a discontinuous phase comprising water or oil, for example, are known and have been applied in various technologies such as in fuels, cosmetics and food, mayonnaise is a daily example of these emulsions (usually comprise approximately 70% vegetable oil in water). These concentrated emulsions have also been applied in the area of cosmetics because the concentrates can stably contain high concentrations of, for example, emollients, humectants and sunscreen agents which can then be diluted by simple cold mixing to obtain the desired final product. US patents may be cited. num. 4,606,913 and 5,976,604 which describe concentrated emulsions. In view of the above considerations, it would be convenient to develop compositions for personal care based on oil-in-water emulsions that exhibit a lower potential to irritate the skin and membranes of the human being and provide a better sensation in the skin. Furthermore, it would be convenient to develop more substantive personal care compositions for the substrate in which they are applied, such as human skin or fabrics, and whose tendency to re-emulsify once they decompose is less.
BRIEF DESCRIPTION OF THE INVENTION In accordance with a first aspect of the invention, a personal care composition comprising an emulsion is provided.; the emulsion comprises a continuous aqueous phase, a discontinuous oil phase, and emulsifier, wherein the emulsifier comprises a non-alkoxylated water-soluble emulsification polymer having a molecular weight of at least 5.0 E-21 g (3000 Daltons), 0.1 % by weight aqueous solution of the water-soluble emulsification polymer has a surface tension of 15-60 mN / m (15-60 dynes / cm) measured at 25 ° C. As used herein, the term "personal care" includes personal cleansing and cosmetic applications such as but not limited to skin moisturizing applications, skin cleansing applications, makeup applications, deodorant and antiperspirant applications, and applications of fine fragrances. As used herein, the term "non-alkoxylated" in relation to water-soluble emulsification polymers means polymers that comprise non-alkoxy groups, ie, not -OR groups (wherein R includes alkyl portions) in the molecule , neither in the main polymer chain, nor suspended there nor in any other place. As used herein, the term "oil in water" or "o / w" means that an oil phase is dispersed in an aqueous phase so that the aqueous phase is the continuous phase and the oil phase is the discontinuous phase. According to a second aspect of the invention, there is provided a method of manufacturing personal care compositions comprising the following steps: (a) Manufacturing a concentrated emulsion comprising at least 50% by weight of the emulsion of the phase of discontinuous oil, a continuous aqueous phase, and an emulsifier, wherein the emulsifier comprises a water-soluble non-alkoxylated emulsifying polymer having a molecular weight of at least 5.0 E-21 g (3000 Daltons), 0.1% by weight of the solution Aqueous water-soluble emulsification polymer has a surface tension of 15-60 mN / m (15-60 dynes / cm) measured at 25 ° C; (b) manufacturing a premix of all other components of the personal care composition; (c) adding the concentrated emulsion to the premix by mixing continuously; (d) continue mixing until a personal care composition of uniform consistency is obtained.
DETAILED DESCRIPTION PE THE INVENTION All weights, measures and concentrations herein are measured at 25 ° C in the composition as a whole, unless otherwise specified. Unless indicated otherwise, all percentages of the compositions mentioned herein are percentages by weight of the total composition (i.e., the sum of all components present) and all proportions are weight proportions. Unless indicated otherwise, all molecular weights of the polymers are weighted average molecular weights. Unless indicated otherwise, the content of all literature sources mentioned in this text is fully incorporated as a reference. Except in the cases in which specific examples of the measured real values are offered, the numerical values cited here should consider that they are qualified with the word "approximately". The oil phase according to the invention can comprise any material immiscible in water which is liquid under ambient conditions; any material that is solid under ambient conditions that has a melting temperature of up to 100 ° C and that melts to form a liquid immiscible in water; and mixtures of those materials.
As used herein with reference to the oil phase, the term "water immiscible" includes materials having a Hildebrand solubility parameter of about 5 to 12 calories / cc (209 -502 kJ / m2). The solubility parameter is defined as the sum of all attractive forces radiated by a molecule. The total Van der Waals force is called the Hildebrand solubility parameter and can be calculated by means of the Hildebrand equation with the boiling point and PM data. The methods and a computer program for calculating the Hildebrand solubility parameter are described by C.D. Vaughan in J. Cosmet. Chem. 36, 319-333 (September / October 1985). The materials comprised within the oil phase may have any polarity and may include aliphatic or aromatic hydrocarbons, esters, alcohols, ethers, carbonates, fluorocarbons, silicones, fluorosilicones or derivatives thereof. Solid materials that may be present in the oil phase include waxes. As used herein, the term "wax" includes natural and synthetic waxes. Natural waxes include waxes of animal origin such as beeswax, lanolin, shellac wax and insect wax; waxes of vegetable origin such as carnauba, candelilla wax, myrtle wax and sugarcane wax; waxes of mineral origin such as ceresin and ozocerite; petrochemical waxes such as microcrystalline wax and petrolatum. Synthetic waxes include ethylenic polymers and polyol ether esters, chlorinated naphthalenes and Fischer-Tropsch waxes. For more details, see Rummp Chemie Lexikon, Georg Thleme Verlag, Stuttgart, 9th edition, 1995 in "Wachse". Conveniently, materials comprised within the oil phase, including molten waxes, have a viscosity of 0.005 to 30,000 cm2 / s (0.5 to 3,000,000 cst), preferably 0.005 to 20,000 cm2 / s (0.5 to 2,000,000 cst) , more preferably from 0.005 to 3500 cm2 / s (0.5 to 350,000 cst). The oil phase can comprise from a small percentage to more than 90% of the composition for personal care. Advantageously, the oil phase comprises less than 50% of the personal care composition. The aqueous phase of the emulsions according to the invention comprises water and may also comprise additional water-soluble components such as alcohols; humectants, including polyhydric alcohols (for example, glycerin and propylene glycol); active agents such as d-panthenol, vitamin B3 and its derivatives (such as niacinamide) and botanical extracts; thickeners and preservatives. The water-soluble emulsification polymers according to the invention have a molecular weight of at least 5.0 E-21 g (3000 Daltons), because if it is lower, the obtained emulsions will impart an inadequate sensation in the skin. The skin feel improves as the molecular weight increases and it is preferred that the water-soluble emulsification polymers according to the invention have a molecular weight greater than 1.2E-20g (7500 Daltons), more preferably greater than 1.5 E-20 g (9000 Daltons), and even more preferably greater than 1.7 E-20 g (10,000 Daltons). Advantageously, the molecular weight of the emulsification polymers does not exceed 2.2 E-19 g (130 kiloDaltons); if it is greater, the viscosity of the aqueous phase can reach a level that makes emulsification difficult, especially at the concentrations of emulsifying polymer that are typically used and when the concentration of the internal oil phase is 80% by weight of the emulsion. Advantageously, at least 50% by weight, more preferably at least 70% by weight, and more preferably at least 80% by weight of the total weight of the emulsifier comprised within the present emulsions consists of one or more non-alkoxylated emulsification polymers. soluble in water. Most advantageously, the emulsifier comprised within the present emulsions consists only of one or more water-soluble non-alkoxylated emulsification polymers as defined herein. Surprisingly, it has been found that any non-alkoxylated water-soluble polymer that meets the criteria determined for molecular weight and surface tension can be used to emulsify the emulsions according to the present invention and are capable of mitigating the problems discovered in the industry. previous. This applies regardless of the chemical nature of the water soluble polymer, so that chemically very different polymers can be used. Non-limiting examples of water-soluble polymers which can be used according to the invention include: alkylated polyvinyl pyrrolidone such as butylated polyvinyl pyrrolidone marketed as "Ganex P904" by ISP Corp .; sodium salts of poly (methylvinyl ether / maleic acid) monoalkyl esters, including the sodium salt of poly (methylvinyl ether / maleic acid) butyl ester, such as those included in the product marketed as "EZ Sperse" by ISP Corp; isobutylene / ethylmaleimide / hydroxyethyl copolymer such as that included in the product marketed as "Aquafix FX64" by ISP Corp .; (3-dimethylaminopropyl) -methacrylamide / 3-methacryloylamidopropyl lauryl dimethyl ammonium chloride such as that included in the product marketed as Styleze W20 by ISP Corp. Conveniently, at least one of the water-soluble non-alkoxylated polymers in accordance with invention has film-forming properties. These properties are present in the higher molecular weight polymers, especially those whose molecular weight is greater than 1.7 E-20 g (10,000 Daltons). The film-forming property can further increase the substantivity of emulsions in the substrate versus the increase provided by traditional surfactants, including alkoxylated surfactants. The disadvantage of dry oil-in-water emulsions comprising traditional surfactants, including alkoxylated surfactants, is their potential to emulsify again when wetted, unlike what happens with the non-alkoxylated water soluble polymers herein whose propensity to emulsifying again is minor. Without theoretical limitations of any kind, it is believed that the substantivity of the compositions herein can be further increased when the polymers exhibit film-forming properties since the film-forming polymer can form a film on the oil phase to retain it on the substratum. The personal care compositions according to the invention may comprise from 0.001% to 5%, preferably from 0.01% to 2% and more preferably from 0.1 to 1% by weight, of the water-soluble emulsification polymer. The compositions according to the present invention may comprise additional components. The exact nature of these other components will depend on the nature of the final product, for example lotions, a shampoo, makeup, or a perfume composition. It is not possible to present an exhaustive list here. Non-limiting examples of other components include solvents, including water; Thickeners, humectants such as polyhydric alcohols including glycerin and propylene glycol; pigments including organic and inorganic pigments; conservatives; chelating agents, antimicrobials, perfumes. Surfactants such as nonionic, anionic, cationic, zwitterionic, and amphoteric surfactants may also be present; however, as mentioned above, it is preferred that most, in fact, all emulsifiers present comprise non-alkoxylated emulsification polymers defined as soluble in water. According to a second aspect of the invention, there is provided a method of manufacturing personal care compositions according to the invention. The method comprises the following steps: (a) Manufacturing a concentrated emulsion comprising at least 50% by weight of the emulsion of the discontinuous oil phase, a continuous aqueous phase, and an emulsifier, wherein the emulsifier comprises an emulsifying polymer not water-soluble alkoxylate having a molecular weight of at least 5.0 E-21 g (3000 Daltons), 0.1% by weight of the aqueous solution of the water-soluble emulsification polymer has a surface tension of 15-60 mN / m (15 -60 dynes / cm) measured at 25 ° C; (b) manufacturing a premix of all other components of the personal care composition; (c) adding the concentrated emulsion to the premix by mixing continuously; (d) continue mixing until a personal care composition of uniform consistency is obtained. Advantageously, the method comprises the additional step (e) of continuous mixing until a particle size of the desired oil phase is obtained. Advantageously, the particle size of the oil phase is between 1 to 20 pm. The concentrated emulsion prepared according to step (a) comprises from 0.01 to 30% by weight, preferably from 0.25 to 12% by weight, more preferably from 0.25 to 5% by weight of the composition for personal care.
Step (a) above defines the manufacture of a concentrated emulsion. A typical concentrated emulsion may comprise 1-5% water-soluble emulsification polymer and 6-15% aqueous phase; however, these ranges are not limiting. Typically, the aqueous phase comprises 00% water or a mixture of water and other water soluble components. Preferably, the viscosity of the aqueous phase does not exceed 2 Pa.s (2000 cps), since above this point the emulsification may be difficult. More details follow regarding the performance of step (a): First, the water-soluble emulsification polymer is added to the aqueous phase while mixing. After that, different batches of 2-3% of the total oil weight are dosed in sequence form in the aqueous phase while mixing gently to obtain a uniform consistency before adding the next batch. This is done until approximately 20% of the total weight of the oil has been added. In a second step, the rest of the oil can be added more quickly and continuously by mixing more vigorously until a uniform emulsion comprising all the oil is obtained. In a third step, mixing is continued until the uniform consistency obtained exhibits a typical particle within the expected range. The concentrated emulsion obtained typically comprises more than 70%, more often from 80 to 93% of internal phase oil by weight of the emulsion, and forms a stable concentrate which can be stored or transported to other places. Step (b) of the manufacturing method involves the creation of a premix of all the other components of the personal care composition. The exact nature of these other components will depend on the nature of the final product. It is not possible to present here an exhaustive list. Non-limiting examples of other components include solvents, including water; thickeners, humectants such as polyhydric alcohols including glycerin and propylene glycol; pigments including organic and inorganic pigments; conservatives; chelating agents, antimicrobials, perfumes. Surfactants such as nonionic, ammonium, cationic, zwitterionic, and amphoteric surfactants may also be present; however, as mentioned above, it is preferred that most, in fact, all emulsifiers present comprise non-alkoxylated emulsification polymers defined as soluble in water. Steps (c) - (e) of the manufacturing method involve the addition of the concentrated emulsion from step (a) to the premix of step (b), mixing to achieve a uniform consistency, and preferably also mixing to achieve a size of desired particle. The mixing steps do not require any special conditions and can be carried out at room temperature and mixed with low shear stress. The possibility of "cold mixing", that is, mixing at ambient conditions without the application of heat is a major advantage of the present method since it allows great flexibility in the order in which steps (b) - (e) of the process can be carried out Particularly, cold mixing allows less safety measures. Examples of personal care compositions that can be manufactured according to the method of the invention include hand and body lotions, shampoo compositions, makeup, perfume and perfume gel compositions. METHODS OF MEASUREMENT Testing the solubility of water-soluble emulsification polymers As used herein with respect to emulsification polymers, the term "water-soluble" includes polymers that meet the following condition: a solution of 1% by weight The polymer in deionized water at room temperature produces at least 90% light transmittance with a wavelength of 455 to 800 nm. For the test, the polymer solution was passed through a standard syringe filter into a cuvette 1 cm in length with a pore size of 450 nm and analyzed with an HP 8453 spectrophotometer configured for analysis and recording in a range of 390 to 800 nm. The insoluble components were removed by filtration. Measurement of surface tension The method used to measure the surface tension of the fluid is the so-called "Wilhelmy plate method". The Wilhelmy plate method is a universal method that is particularly suitable for determining surface tension in time intervals. Basically, a vertical plate of known perimeter is placed on a balance, and the force induced by the wetting is measured. More specifically: 0.1% by weight aqueous solution of water soluble emulsification polymer in deionized water is prepared. The polymer solution is then poured into a clean and dry glass container, the temperature of the solution is controlled at 25 ° C. The clean and annealed Wilhelmy plate is lowered to the surface of the liquid. When the plate is on the surface of the liquid, the force necessary to remove the plate from the liquid is measured. The equipment used and the corresponding configuration are indicated below: Device: Krüss K12 tensiometer, manufactured by Krüss GmbH, Borsteler Chausee 85-99a, 22453 Hamburg - Germany (see www.kruess.com). Dimensions of the plate: width: 19.9 mm; Thickness: 0.2 mm; height: 10 mm Measurement configuration: immersion depth: 2 mm, surface detection sensitivity: 0.01 g, surface detection speed: 6 mm / min, 10 values, acquisition line, maximum measurement time: 60 sec. The plate is immersed in the fluid and the value corresponding to the surface tension is read on the screen of the device. The instructions can be found in the user manual edited by "Krüss GmbH Hamburg 1996" Version 2.1.
EXAMPLES The following examples further describe and demonstrate the preferred embodiments comprised within the scope of the present invention. The examples are provided for illustrative purposes only and should not be construed as limiting the present invention since many variations are possible without deviating from their spirit and scope.
Example 1: lotion for hands and body Dow Corning 1503 fluid is a mixture of dimethicone and dimethiconol made by Dow Corning EZ Sperse is a 25% solution of sodium salt of poly (methylvinyl ether / maleic acid) butyl ester and is a copolymer of maleic anhydride and methylvinyl ether reacted with butanol water to form a half ester which is neutralized with sodium hydroxide. ISP Corp. is the manufacturer of the EZ Sperse.
Procedure to prepare a batch of 1000 q of concentrated emulsion of oil in water Isohexadecane, isopropyl isostearate and DL-tocopheryl acetate are mixed with a Kitchen Aid Ultra Power mixer until a uniform mixture is obtained. The water and the EZ Sperse are mixed in the same way. Then, the mixture of isohexadecane / isopropyl isostearate / DL-tocopheryl acetate is added to the water / EZ Sperse mixture at a rate of 8 g / minute while mixing continuously with a Kitchen Aid Ultra Power mixer whose blades were set to the speed "4". After the addition is complete, the Dow Corning 1503 fluid is added to the mixture at the same speed and mixed in the same manner until a uniform mixture is obtained.
Lotion for hands and body Material% by weight Weight (g) Deionized water 69.92 699.2 Glycerin 5.00 50.0 Phenonip3 1.00 10.0 D-panthenol 0.50 5.0 Sepigei 3054 4.00 40.0 System 3 AM9005 5.33 53.3 System 3 A 5006 4.00 40.0 Concentrated oil emulsion 10.28 102.8 in water Phenoxyethanol and methyl-, ethyl-, butyl-, propyl and sodium bicarbonate from Ñipa Labs Inc. Seppigel 305 is a combination of polyacrylamide and isoparaffin C13-14 and laureth-7 and is available from Seppic Group. System 3 A 500 is a mixture of water, petrolatum, lecithin, hydrogenated lecithin and poly (phosphoricoline glycollacrylate) marketed by Collaborative Laboratories Inc. System 3 A 900 is a mixture of water, cetearyl alcohol, hydrogenated polyisobutene, lecithin, hydrogenated lecithin, butylene glycol and poly (phosphorylcholine glycolylate) marketed by Collaborative Laboratories Inc.
Procedure to prepare a batch of 1000 g of lotion for hands and body All the mixing was done with a Kitchen Aid Ultra Power mixer with blades whose speed was set to "2". The deionized water, the glycerin, the Phenonip and the d-panthenol are mixed until a uniform mixture is obtained, after which the Sepigei 305 is dispersed in it, mixing until obtaining also a uniform mixture. Then, the System 3 AM900 is added to the mixture and mixed until a uniform mixture is obtained, the System 3 AM500 was added and mixed until obtaining a uniform mixture and finally, the concentrated emulsion of oil in water is added and mixed to produce a hand and body lotion of uniform consistency.
Example 2: foundation for makeup Kobo Products Inc., titanium dioxide and isopropium titanium triisostearate Kobo Products Inc., hydrated ferric oxide and isopropium titanium triisostearate Kobo Products Inc., ferric oxide and isopropium titanium triisostearate Kobo Products Inc., iron oxide and isopropii triisostearate titanium Butylated polyvinylpyrrolidone obtained from ISP Corp., Inc.
Procedure to prepare the pigment premix Mix Ganex P904 and water with a Kitchen Aid Ultra Power mixer until a uniform mixture is obtained. Then, the pigments are added to the Ganex P904 / water mixture and mixed with a Cito Unguator mixer for 1 minute and at a speed set at 5.
Cyclohexasiloxane fluid made by Dow Corning Cyclopentasiloxane fluid made by Dow Corning Procedure to prepare a batch of 1000 g of concentrated oil-in-water emulsion Tridecyl neopentanoate is mixed, the Dow Corning 245 fluid and the Dow Corning 246 fluid with a Kitchen Aid Ultra Power mixer until a uniform mixture is obtained. The water and the EZ Sperse are mixed in the same way. Then the mixture of tridecyl neopentanoate / Dow Corning 245 fluid and Dow Corning 246 fluid is added to the water / EZ Sperse mixture at a rate of 8 g / minute while continuously mixing with a Kitchen Aid Ultra Power mixer whose blades are configured at speed "4". 8 Aluminum octyl succinate starch and boron nitride available from National Starch & Chemical Procedure for preparing a base for maguillaie All the mixing was done with a Kitchen Aid Ultra Power mixer with blades whose speed was set to "2". The Phenonip is dispersed in the water and mixed. The Dry Fio Elite BN is dispersed in the glycerin and mixed until a uniform mixture is obtained; The glycerin / Dry Flow Elite BN mixture is then added to the Phenonip / water mixture and mixed until a uniform mixture is obtained. Seppigel 305 is added to the mixture and mixed until obtaining a homogenous mixture without lumps. In the obtained mixture the pigment is added and it is continued mixing until obtaining a uniform color. Finally, the concentrated emulsion of oil in water is mixed until obtaining a uniform emulsion to produce the base for final make-up.
Example 3: gel perfume Procedure to prepare the concentrated emulsion of oil in water The EZ Sperse and 7.5% in weight of water are mixed with a Kitchen Aid Ultra Power mixer until a uniform mixture is obtained. Then, the fragrance oil is added at a rate of 8 g / minute while mixing continuously with a Kitchen Aid Ultra Power mixer whose blades are set to speed "4". Due to the high viscosity of the emulsion, it is diluted with the rest of the water while mixing continuously with a Kitchen Aid Ultra Power mixer whose blades are set to speed "4".
Gel perfume Material% by weight Deionized water 86.5 Seppigel 305 3.5 Concentrated emulsion w / perfume 10.0 Procedure for preparing a gel perfume All the mixing was done with a Kitchen Aid Ultra Power mixer with pallets whose speed was set to "2". Seppigel 305 is dispersed in the water and mixed until a homogeneous gel is obtained, after which the o / w emulsion of perfume is added and mixed until a gel perfume of uniform consistency is produced.
Example 8: Wax emulsion This example relates to the generation of a concentrated emulsion comprising a wax base oil phase. The concentrated emulsion would be suitable for incorporation into personal care compositions according to the invention, such as those in the previous examples.
Concentrated emulsion of oil in water Material% by weight Weight (g) EZSperse 5.0 50 Water 5.0 50 Glycerin (99%) 10.0 100 Petrolatum USP 80.0 800 Procedure for preparing an oil-in-water emulsion EZSperse, water and glycerin are mixed until obtaining a uniform mixture. This mixture is heated to 70 ° C. The petrolatum is also heated to 70 ° C separately. Then, the petrolatum is slowly added into the aqueous phase and mixed continuously with a Kitchen Aid mixer equipped with a paddle. Continue mixing until obtaining a uniform consistency. It is understood that the examples and embodiments described in the present invention are for illustrative purposes only and that in the light thereof, a person with experience in the industry will be suggested different changes and modifications without departing from the scope of the present invention. . The relevant parts of all the cited documents are incorporated herein by reference; the mention of any document should not be construed as an admission that it constitutes a prior industry with respect to the present invention. While particular embodiments of the present invention have been illustrated and described, it will be apparent to those skilled in the art that various changes and modifications can be made without departing from the spirit and scope of the invention. It has been intended, therefore, to cover in the appended claims all changes and modifications that are within the scope of the invention.

Claims (15)

  1. NOVELTY OF THE INVENTION CLAIMS 1. A personal care composition comprising an emulsion; wherein the emulsion comprises: a) a continuous aqueous phase; and b) a discontinuous oil phase, c) an emulsifier; and wherein the emulsifier comprises a water-soluble non-alkoxylated emulsification polymer having a molecular weight of at least about 5.0 E-21 g (3000 Daltons), 0.1% by weight aqueous solution of the water-soluble emulsification polymer has a surface tension of about 15 to about 60 mN / m (about 15 to about 60 dynes / cm) measured at about 25 ° C. 2. The personal care composition according to claim 1, further characterized in that at least about 70% of the total weight of the emulsifier comprises one or more water-soluble non-alkoxylated emulsification polymers. 3. The personal care composition according to claim 1, further characterized in that the emulsifier comprises at least one water-soluble non-alkoxylated emulsification polymer. 4. The personal care composition according to claim 1, further characterized in that the oil phase has a Hildebrand solubility parameter of about 5 to about 12 calories / cc (about 209 to about 502 kJoule / m2). 5. The personal care composition according to claim 1, further characterized in that the oil phase has a viscosity of about 0.005 cm2 / s to about 30,000 cm2 / s. 6. The personal care composition according to claim 1, further characterized in that the water-soluble emulsification polymer has an average molecular weight greater than about 1.7 E-20 g (10,000 Daltons). The personal care composition according to claim 1, further characterized in that the emulsification polymer has an average molecular weight of less than about 2.2 E-19 g (130 kiloDaltons). The personal care composition according to claim 1, further characterized in that it comprises from about 0.001 to about 5% by weight of the water-soluble emulsification polymer. 9. The personal care composition according to claim 1, further characterized in that it comprises from about 0.1 to about 1% by weight of the water-soluble emulsification polymer. 10. The personal care composition according to claim 1, further characterized in that the emulsifier comprises the water-soluble emulsification polymers selected from the group comprising sodium salts of poly (methylvinyl ether / maleic acid) monoalkyl esters; alkylated polyvinyl pyrrolidone; polyesters of terephthalate and (3-dimethylaminopropyl) -methacrylamide / 3-methacryloylamidopropyl lauryl dimethyl ammonium chloride, and mixtures thereof. 11. The composition for personal care according to claim 1, further characterized in that the composition is selected from the group comprising a lotion, a shampoo, a make-up, a gel perfume. 12. The composition for personal care according to claim 11, further characterized in that the lotion is a hand lotion and a body lotion. 13. A personal care composition comprising an emulsion; wherein the emulsion comprises: a) a continuous aqueous phase; and b) a discontinuous oil phase, c) an emulsifier; and wherein the emulsifier comprises at least one water-soluble non-alkoxylated emulsifying polymer, wherein the non-alkoxylated water-soluble emulsifying polymer has an average molecular weight of at least about 1.7 E-20 g (10,000 Daltons); wherein 0.1% by weight of the aqueous solution of the water-soluble emulsification polymer has a surface tension of about 15-60 mN / m (15-60 dynes / cm) measured at about 25 ° C; 14. A personal care composition comprising an emulsion; wherein the emulsion comprises: a) a continuous aqueous phase; and b) a discontinuous oil phase, c) an emulsifier; and wherein the emulsifier comprises at least one water-soluble emulsification polymer selected from the group comprising sodium salts of poly (methylvinyl ether / maleic acid) monoalkyl esters; alkylated polyvinyl pyrrolidone; polyesters of terephthalate and (3-dimethylaminopropyl) -methacrylamide / 3-methacryloylamidopropyl lauryl dimethyl ammonium chloride, and mixtures thereof. 15. A personal care composition comprising an emulsion; wherein the emulsion comprises: a) a continuous aqueous phase; and b) a discontinuous oil phase, c) an emulsifier; and wherein the emulsifier comprises a non-alkoxylated water-soluble emulsification polymer; the water-soluble non-alkoxylated emulsification polymer has an average molecular weight of at least about 1.7 E-20 g (10,000 Daltons); wherein 0.1% by weight of aqueous solution of the water-soluble emulsification polymer has a surface tension of about 15-60 mN / m (15-60 dynes / cm) measured at about 25 ° C; wherein at least one of the water-soluble emulsification polymers is a film-forming polymer. 16 A method for making a composition for personal care; the method comprises the steps of: (a) making a concentrated emulsion comprising at least about 50% by weight of the emulsion of a discontinuous oil phase, a continuous aqueous phase, and emulsifier, wherein the emulsifier comprises an emulsifying polymer non-alkoxylated water-soluble having a molecular weight of at least about 5.0 E-21 g (3000 Daltons), 0.1% by weight aqueous solution of the water-soluble emulsification polymer has a surface tension of about 15 to about 60 mN / m (approximately 15 to approximately 60 dynes / cm) measured at approximately 25 ° C; (b) manufacturing a premix of all other components of the personal care composition; (c) adding the concentrated emulsion to the premix by mixing continuously; (d) continue mixing until a personal care composition of uniform consistency is obtained. The method according to claim 16, further characterized in that it further comprises the additional step (e) of continuous mixing until a desired particle size of the oil phase is obtained. 18. The method according to claim 17, further characterized in that the particle size of the oil phase is from about 1 to about 20 μm. The method according to claim 16, further characterized in that the concentrated emulsions comprise from about 0.01 to about 30% by weight of the personal care composition. The method according to claim 16, further characterized in that the concentrated emulsions comprise from about 0.25 to about 5% by weight of the personal care composition.
MXPA06001474A 2003-08-07 2004-08-02 Personal care compositions. MXPA06001474A (en)

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US20050031660A1 (en) 2005-02-10
EP1682078A1 (en) 2006-07-26

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